*{
	padding: 0px;
	margin: 0px;
	font-family: "Microsoft Yahei";
}

#box{
	width: 606px;
	height: 606px;
	border: 1px solid yellow;
	margin: 200px auto;
}
.box1{
	width: 200px;
	height: 200px;
	border: 1px solid;
	border-color: yellow;
	float: left;
	line-height: 200px;
	text-align: center;
	font-size: 60px;
	color: #52D9EF;
}
#btn{
	width: 202px;
	height: 202px;
	border: 1px solid yellow;
	background: #999999 url() 0 0 no-repeat;
	font-size: 60px;
	color: #FFF;
	float: left;
}